Get Your GM Truck or Van Back on the Road, Fast.
Is your trusty Chevy Express, Suburban, or Sierra suddenly running rough, refusing to start, or throwing confusing check engine lights? A failing Powertrain Control Module (PCM) is often the culprit, leaving you stranded and costing you valuable time. This isn’t just an inconvenience; it’s a roadblock. We offer the definitive solution: a reliable, VIN-programmed PCM that gets you back to work and back to your life without the dealership hassle or price tag.
Common Symptoms & Your Solution
If you’re experiencing any of the following issues, a faulty engine computer is the likely cause. This module is the direct solution for:
- Erratic or harsh transmission shifting
- Poor fuel economy
- Engine stalling, misfiring, or running rough
- Complete no-start condition
- Check Engine Light with communication error codes (like P0601, P0605, P0606)
- Failure to pass emissions testing
Instead of wrestling with a dead vehicle, our Programmed 1998-1999 Chevy Express 2500 PCM arrives ready for installation. We take a tested, genuine GM unit and flash it with the latest official software, precisely matched to your vehicle’s specific VIN. This eliminates guesswork and ensures all systems communicate correctly from the moment you turn the key.
Features & Benefits
- âś” Plug & Play Installation: We handle all the complex programming. Simply provide your VIN after purchase, and the module arrives ready to be installed with no additional flashing required.
- âś” Cost-Effective Reliability: Get a dependable, tested OEM computer for a fraction of the cost of a new unit from a dealer.
- âś” Updated GM Software: Your module is loaded with the newest updates from General Motors, ensuring optimal engine performance, fuel efficiency, and transmission function.
- âś” Guaranteed Compatibility: By programming to your VIN, we ensure this PCM is a perfect match for your vehicle’s engine, transmission, and options package.
- âś” This unit is backed by our one-year replacement warranty.
Expert Insight: The GM Passlock Security Mismatch
A common mistake DIYers make with these late-90s GM vehicles is installing a used PCM from another truck without proper programming. This almost always results in a no-start condition due to the vehicle’s anti-theft system (VATS or Passlock). The security data is stored in the PCM and must match the rest of the vehicle. Our VIN programming service correctly syncs this critical information, preventing security lockouts and ensuring a smooth, successful repair the first time. This is why a properly Programmed 1998-1999 Chevy Express 2500 PCM is not just a part, but a complete solution.
Frequently Asked Questions
What exactly is a PCM?
The Powertrain Control Module (PCM), also known as the Engine Control Module (ECM), is the central computer of your vehicle. It controls all aspects of engine and transmission function, including fuel mixture, ignition timing, and shift points, to ensure peak performance and efficiency.
How do I provide my VIN?
After you complete your purchase, you will receive instructions on how to send us your 17-digit Vehicle Identification Number (VIN). We cannot program and ship your part until we receive this information.
Is any additional programming needed after installation?
In most cases, no. Our goal is to provide a plug-and-play solution. However, some GM vehicles of this era may require a simple security relearn procedure that takes about 30 minutes and involves cycling the key. We include instructions for this straightforward process.
Is this a new part?
No, this is a genuine, used OEM computer that has been sourced from a salvaged vehicle. Each unit is thoroughly tested for functionality before being programmed and shipped to you.
My original part number isn’t 16266645. Will this still work?
Yes. This computer is a direct replacement for several part numbers, including 09355699, 16250279, and others listed in the fitment guide. As long as your vehicle is on the compatibility list, our VIN programming ensures it will function correctly as a Programmed 1998-1999 Chevy Express 2500 PCM should.